Lecture10: Pelvic Wall

Question 1

What are the two muscles of the pelvic wall?

Answer 1

Obturator internus and the piriformis

Question 2

What do both pelvic muscles pass through?

Answer 2

Sciatic foramina

Question 3

What do both pelvic muscles act on?

Answer 3

Hip joint

Question 4

What is the nerve supply of both piriformis and obturator internus?

Answer 4

L5, S1,2

Question 5

What is the Foramen that the obturator internus passes through?

Answer 5

Lesser sciatic foramen

Question 6

What are both pelvic floor muscles?

Answer 6

The Levator Ani and coccygeus muscles

Question 7

What does the Levator Ani originate from?

Answer 7

The Tendinous arch

Question 8

What is the largest component of the Pelvic Diaphragm?

Answer 8

The Levator Ani

Question 9

The puborectalis relaxes during?

Answer 9

Defecation

Question 10

What does the puborectalis form a sling around?

Answer 10

Around the terminal part of the GIT tract

Question 11

What supplies the Levator Ani?

Answer 11

Anterior ramus of S4 and branches of the pedundal nerve

Question 12

Actions of Levator ani?

Answer 12

Contraction during defecation, functions as a vaginal sphincter

Question 13

The Perineum’s urogenital triangle, contains…?

Answer 13

Roots of external genitalia

Question 14

The Perinuem’s Anal triangle contains…?

Answer 14

The Anus and the External anal sphincter

Question 15

What is the Perineal body?

Answer 15

A CT structure that perineal and pelvic muscles attack to

Question 16

During labor, the Perineal body may be torn, this leads to?

Answer 16

Prolapse of the Uterus

Question 17

What is the major artery of the pelvis and perineum?

Answer 17

The Internal Iliac artery